公开(公告)号：DK121677B

公开(公告)日：1971-11-15

申请号：DK605268

申请日：1968-12-11

Applicant: BAYER AG

Inventor： ROEHM W ,  WANDEL M ,  BEHRENZ W ,  GROESCHEL H

IPC: A01N20060101 ,  C07F9/08 ,  A01N9/36 ,  A01N17/08

公开(公告)号：SE345275B

公开(公告)日：1972-05-23

申请号：SE558268

申请日：1968-04-25

Applicant: BAYER AG

Inventor： LEUSCHKE C ,  ROEHM W

IPC: C08K5/315 ,  C08L1/10 ,  C08B21/02

Abstract: 1,166,584. Radiation absorbent cellulose ester sheets. FARBENFABRIKEN BAYER A.G. 29 April, 1968 [29 April, 1967], No. 20118/68. Heading C3F. A transparent sheet suitable for the production of welders' screens or goggles comprises an organic cellulose ester, from 0À05-1% by wt. of a U.V. radiation absorber, from 0À01-1% of finely divided carbon black of particle size average less than 120 A and, optionally, from 0À01-0À3% of a dye soluble in the cellulose ester. By organic cellulose ester is meant a cellulose acetate having at least 55% by wt. combined acetic acid and containing not more than 20% of plasticizer; or a cellulose propionate and/or acetate butyrate containing not more than 10% of plasticizer. The ester must also have a Vicat heat distortion (defined in DIN 53 460) of at least 104‹ C. The radiation absorber may be based on benzotriazole, benzophenone or acrylonitrile. Phthalic and/or adipic ester plasticizers are specified. As dye, a proprietary phthalocyanine blue or green is specified.

公开(公告)号：SE327743B

公开(公告)日：1970-08-31

申请号：SE346267

申请日：1967-03-13

Applicant: BAYER AG

Inventor： HOFMEIR H ,  ROEHM W ,  REESE E

IPC: B32B27/00 ,  H01B3/00 ,  H01B3/08 ,  H01B3/42 ,  H01B3/50 ,  B29D9/00

公开(公告)号：NO125097B

公开(公告)日：1972-07-17

申请号：NO150468

申请日：1968-04-20

Applicant: BAYER AG

Inventor： LEUSCHKE C ,  ROEHM W

IPC: C08K5/315 ,  C08L1/10 ,  C08B21/02 ,  A61F9/06

Abstract: 1,166,584. Radiation absorbent cellulose ester sheets. FARBENFABRIKEN BAYER A.G. 29 April, 1968 [29 April, 1967], No. 20118/68. Heading C3F. A transparent sheet suitable for the production of welders' screens or goggles comprises an organic cellulose ester, from 0À05-1% by wt. of a U.V. radiation absorber, from 0À01-1% of finely divided carbon black of particle size average less than 120 A and, optionally, from 0À01-0À3% of a dye soluble in the cellulose ester. By organic cellulose ester is meant a cellulose acetate having at least 55% by wt. combined acetic acid and containing not more than 20% of plasticizer; or a cellulose propionate and/or acetate butyrate containing not more than 10% of plasticizer. The ester must also have a Vicat heat distortion (defined in DIN 53 460) of at least 104‹ C. The radiation absorber may be based on benzotriazole, benzophenone or acrylonitrile. Phthalic and/or adipic ester plasticizers are specified. As dye, a proprietary phthalocyanine blue or green is specified.

公开(公告)号：SE339314B

公开(公告)日：1971-10-04

申请号：SE213868

申请日：1968-02-19

Applicant: BAYER AG

Inventor： REESE E ,  ROEHM W ,  SCHNELL H ,  HOFMEIER H ,  BOTTENBRUCH L

IPC: C08G18/34 ,  C08G73/06 ,  H01B3/30 ,  B29D7/00 ,  B29D7/24

Abstract: 1,147,016. Poly-1,3-benzoxazine-2,4-dione films. FARBENFABRIKEN BAYER A.G. 20 Feb., 1968 [21 Feb., 1967], No. 8129/68. Heading B5B. [Also in Division C3] A poly- 1 ,3-benzoxazine-2,4-dione film, is made by casting a solution in an inert organic solvent of the said polymer, obtained by reacting a di-o-hydroxyaryl dicarboxylic acid aryl ester with an organic diisocyanate in an organic solvent in a one step reaction, to form a film, and drying and stretching the film to at least twice its original length, the stretching being effected at a temperature of at least 200‹ C. The inert organic solvent may be dimethylformamide, dimethylacetamide, tetramethylenesulphone, dimethylsulphoxide, or a halo. genated hydrocarbon, e.g. methylene chloride, chloroform, tetrachloroethane or chlorobenzene. Mixtures of these solvents with other solvents such as aromatic hydrocarbons, e.g. benzene, toluene, aliphatic ethers e.g. diethylether, diisopropylether, or cyclic ethers, e.g. dioxane or tetrahydrofuran may also be used. Stretching is preferably effected at a temperature of from 250 to 300‹ C. Films so made, unlike prior films of the same material, are soluble, and have good electrical insulating properties. Examples are given.

公开(公告)号：DK116771B

公开(公告)日：1970-02-09

申请号：DK66968

申请日：1968-02-20

Applicant: BAYER AG

Inventor： REESE E ,  ROEHM W ,  SCHNELL H ,  HOFMEIER H ,  BOTTENBRUCH L

IPC: C08G18/34 ,  C08G73/06 ,  H01B3/30 ,  C08G41/00

Abstract: 1,147,016. Poly-1,3-benzoxazine-2,4-dione films. FARBENFABRIKEN BAYER A.G. 20 Feb., 1968 [21 Feb., 1967], No. 8129/68. Heading B5B. [Also in Division C3] A poly- 1 ,3-benzoxazine-2,4-dione film, is made by casting a solution in an inert organic solvent of the said polymer, obtained by reacting a di-o-hydroxyaryl dicarboxylic acid aryl ester with an organic diisocyanate in an organic solvent in a one step reaction, to form a film, and drying and stretching the film to at least twice its original length, the stretching being effected at a temperature of at least 200‹ C. The inert organic solvent may be dimethylformamide, dimethylacetamide, tetramethylenesulphone, dimethylsulphoxide, or a halo. genated hydrocarbon, e.g. methylene chloride, chloroform, tetrachloroethane or chlorobenzene. Mixtures of these solvents with other solvents such as aromatic hydrocarbons, e.g. benzene, toluene, aliphatic ethers e.g. diethylether, diisopropylether, or cyclic ethers, e.g. dioxane or tetrahydrofuran may also be used. Stretching is preferably effected at a temperature of from 250 to 300‹ C. Films so made, unlike prior films of the same material, are soluble, and have good electrical insulating properties. Examples are given.